Machine for polishing gut strings



l I: I m I Sept. 23, 1924. 1,509,263

J. SALADINO MACHINE FOR POLISHING GUT STRINGS Filed Dec. 4, 1922 2 Sheets-Skies! 1 Indie ml??? Joseph fialadino Sept. 23, 2924. 1,509,263

J. SALADINO MACHINE FOR POLISHING GUT STRINGS Filed Dec. 4, 1922 2 Sheets-Sheet. 2

WWI I I'm/e 42 Z31",

'Joseph Saladiflo;

15m: e y.

Patented Sept. 23*, 1924..

warren stares estates entrant orries.

JOSEPH SALAIDINO, OF CHELSEA, MASSACHUSETTS, ASSIGNOR- 110 C. SALAIDINO & SONS, OF CHELSEA, MASSACHUSETTS, A COPARTNERSI-IIP CONSISTING F GABMELO SALADINO, SR., CARMELOSALADINO, JB., JOSEPH. SALADINO,.SALVATORE SALA- DINO, MICHAEL SALADINO, AND FRANK SALADINO.

MACHINE FOR IPOLISHIFIG GUT STRINGS.

Application filed December 4, 1922.

To all whom it may concern;

Be it known that I, Josnrr-r SALADINo,

To this end I provided means for support ing several such strings in a taut condition each being adapted to be periodically turned and supply blocks of pumice stone or the like disposed to be reciprocated in contact with opposite sides of the strings.

and at the same time to be caused to travel from end to end of the same.

In the drawings forming part of this specification, Fig. 1 is a side view of a machine embodying my invention, the intermediate portion being represented as broken away. Fig. 2 isa plan view on a larger scale of one end of the machine. Fig. 3 is an end elevation of the same. Fig. et is a side view on a still larger scale of the polishing carriage.

The reference numeral 1 designates a number of gut or other strings to be polished,-twelve as illustrated in Fig. 2,- terminally supported side by side in a horizontal plane. Resting upon them from above is a block 2 preferably composed of pumice stone, and pressed up against them from beneath is a similar block 3. These blocks are supported by a carrier 1 which is made to travel from end to end of the strings, and are at the same time given a reciprocation parallel with the strings. During this polishing action each string is given a rotary oscillation which presents every portion of it to the action of the blocks.

For thus actuating the polishing blocks and the strings, power is communicated to a cross shaft 5 and thence by means of bevel gears 6, 7 and a clutch member 9 to a main shaft 10, the clutch being provided for reversing the direction of the'shafts rotation. The carrier consists of a vertically disposed Serial No. 604,969.

frame 4 having arms 12, 13 through which the shaft freely passes, the lower'edge of the frame having grooved wheels 14 rolling upon a track-rail 15 reachingfrom end to end of the machine. Slidably mounted on the shaft 10 between the arms 12 are a bevel gear 16 and a worm 17 made to rotate therewith b a spline 19. The worm meshes with a gear 20 which is connected with a spur gear 21 engaging a rack bar 22 designed to extend for nearly the length of the machine, whereby the rotation of the shaft 10 is made to propel the carrier from end to end. The bevel gear 16 meshes with a second bevel gear 23 which is operatively connected with a crank wheel 24, as by gears 25. 26.

A pitman 27 joins the crank pin 29 to a plate 30 confined to. a slide 31 by screws 32 passing through slots 33, whereby as the crank wheel 2% rotates, the pitman will first move the plate 30 to its limit and then actuate the slide 31.

Pivoted to the slide 31 at 34 is an arm 35 carrying the polishing block 2, this arm being pivoted at 36 to the plate 30. Thus disfirst to press the block 2 firmly down upon the strings, and then to move the slide and block parallel with the strings, thus polishing the latter upon their uppermost surfaces.

The under block 3 is secured to the slide 31 by means of a bracket 37 in which it is vertically adjusted by a hand wheel and screw 39, and adjusted transversely to the strings by a hand wheel and screw 40. The block 2 is similarly adjusted transversely to the strings by a hand wheel and screw 41, the purpose of such adjustment being toprevent the strings from cutting grooves too deeply in the blocks.

l/Vhen the carrier reaches either extreme of the machine, the clutch member is shifted to reverse the direction of rotation of the shaft 10.

I prefer to build these polishing machines between forty and fifty feet in length in order to accommodate strings of maximum dimension, the polishing devices automatically maintaining their action from one posed, each stroke of the pitman 27 serves end to the other of the set of strings until the latter are thoroughly polished, and with practically no hand labor.

What I claim is:

1 A string polishing machine comprising a longitudinally disposed drive shaft, a rier adapted to move in a direction parallel with said shaft, a slide movably supported by said carrier, a. plate slidably carried by said slide, an arm pivoted to said slide and having a polishing member at its upper end, means for slowly advancing said carrier and reciprocating said plate, said arm and plate being loosely connected, and means for sup porting strings beneath and in contact with said polishing member, said shaft actuating said carrier and reciprocating means.

2. A. string polishing machine comprising a longitudinally disposed shaft, a track-rail spaced below but parallel therewith, a car rier having flanged wheels running on said track-rail and provided with arms penetrated by said shaft, a worm and a beveled gear loosely mounted on said shaft to slide thereon but to turn therewith and moving with said carrier, a gear meshing with said worm and connected with a spur gear, a stationary rack bar meshing with saidspur gear, a bevel gear meshing with the first named bevel gear, a polishing member carried by said-carrier, means for reciprocating said member connected with the secondnamed bevel gear, and means for supporting strings in contact with said polishingmem= along said shaft, a polishing member adjustably supported b. said carrier beneath strings being po isli'e'd and pressed ujpward against the same a polishing member resting apes and strin s, means for reap-re cating this polishing member in the direction 'ofthe strings actuated said shaft, 'a longitudinally disposed rack bar, and means engaging said rack bar and actuated said Shaft 1- slowly moving; Sara earner along said rail. i v 4 In testimony that I claim the "foregoing invent-ion, I have hereunto set my" hand this twenty-seventh dayof November, 1922;

J GSEPH SALADINU. 

